Improved double-seaming machine



' UNITED STATES PATENT OEEICEa VILLIAM BURTON, OF GAZENOVIA, NEW YORK.

IMPROVED DOUBL-SEAIVIING MACHlNE.

Specification forming part of Letters Patent No. 24,44l, dated June 21, 1859.

T0 all whom it' may concern,.-

Be it known that I, WILLIAM BURTON, of Cazenovia, in the county of Madison and State of New York, have invented a new and useful Improvement in Machines for Turning Down the Double Seam of Tin Vessels; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forminga part of this specification, in which- Figure l is a partial side elevation and partial longitudinal section of my improved double-seaming machine. Fig. 2 is an end view of the same.

Similar letters of reference in each of the figures indicate corresponding parts.

My invention only is designed for turning down the double seam of tinware after said seam has been formed by other well-known machines.

The nature of my invention consists in arranging the vertical center of the horizontal disk or former7 which receives the pan or other articleto be double-seamed out of line or to one side of the center of the vertical or working head or disk which turns the pan and passes down the double seam,so that an eccentric draft outward from the center of' the hori zontal disk sufficient to move the pan round shall be occasioned, and at the same time the seam gradually turned down, the eccentric draft causing the article being double-seamed to be kept very snug against the bottom and side of the horizontal disk at the point of operation, and consequently a more perfect and nished seam is made with but little inconvenience and labor on the part of the operator than is producedwhen the vertical axis of the former is in line with the horizontal axis of the working-head.

y invention also consists in a workinghead adapted for turning down the double seam of straight and flaring tinware, in combination with a shaft which supports the former, made adjustable up and down, and with aframe carrying the working-head made adjustable longitudinally, as hereinafter described.

To enable others skilled in the art .to make and use my invention, I will proceed to describe its construction and operation.

My machine, considered as a whole, is to be made of cast and wrought iron.

A isthe base on which the machine stands. This base is fastened to the table or bench.

B is an upright standard fastened to the base with a screw-bolt and nut C Din such a manner as to be moved backward and forward by loosening the nut D, in order to accommodate large or small tinware. On top of this standard a crank-shaft, E, is arranged so as to revolve. To one end 0f this shaft the crank F is attached, and on the other end the working-head G is arranged, as shown. This working-head is shaped as at a b so as to operate upon flaring tinware, and as at c d, so as to operate upon straight work.

H is a set-crew to pitch the Working-head G down upon the tin pan, and I is a spring for raising the shaft E and workinghead G from off the work when done. The screw H of course requires to be turned up when it is desired to have the spring perform the office just stated.

J is a Vertical wrought-iron shaft, which stands in an adjustable step, K, of a vertical standard, L, of the base A. Thel upper end of this 'shaft is conical, and a taper disk or former, M, goes onto, so as to be readily removed when it is desired to substitute a disk with a straight side or disks to accommodate larger and smaller sizes of tinware. Below the disk or former the shaft fits in a box, e, which slides longitudinally in a groove, f, of a vertical standard, M, as shown, so as to allow the .tin pan while on the disk or former to be moved in and out under the workinghead. The step K of the shaft J is made adjustable by a screw thread. The object in making it adjustable is to raise the disk with taper side to a proper position for working in concert with the parts a b of the Workinghead. When a disk with straight side is used, lower the same so as to work in concert with the parts c d of the working-head.

It will be observed that the shafts E and J are not on the same longitudinal line with each other. This arrangement causes a draft from the center of the pan to the outer edge, and as you turn the, crank the work moves round gradually, the working-head, which the set-screw holds firmly down onto the pan, caus ing this draft and holding the pan, and with its bevel part a or straight part d turning down the double seam in the most perfect and effectual manner.

VVhatIcla-im as my invention, and desire to l former or disk, and with the Working-head secure by Letters Patent, is-, frame adjustable longitudinally, substantially l. The use of aworkingheadin combination as and for the purposes set forth. with a disk or former when arranged to pro- The above speciiication of4 my improvement duce an outward or eccentric draft and at the in double-seaming machines signed by me this same time accomplish the turning down ofthe 21st day of April, 1859. double seam substantially as and for the pur- T pose herein set forth. WILLIAM BURTOB 2. The Working-head a b c d, in combination W'itnesses: with' the shaft which is adjustable 11p-and J OLIVER IVES, down and supports a taper or straight-sided OLIVER JEWELL. 

